IntersectionObserver.unobserve()

unobserve()方法命令IntersectionObserver停止对一个元素的观察。

语法

IntersectionObserver.unobserve(target);

参数

target
要取消观察的目标，如果没有提供，方法不做任何事情，也不会抛出异常。

返回值

undefined.

例子

下面代码段展示了一个观察器被创建，一个元素被观察，以及取消观察的过程。

var observer = new IntersectionObserver(callback);
observer.observe(document.getElementById("elementToObserve"));

/* ... */

observer.unobserve(document.getElementById("elementToObserve"));

说明

Specification Status Comment
Intersection Observer
IntersectionObserver.unobserve()		 Working Draft Initial definition.

浏览器兼容性

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
unobserve
Experimental
Chrome Full support 51Edge Full support 15
Notes
Full support 15
Notes
Notes Available since Windows Insider Preview Build 14986
Firefox Full support 55
Full support 55
No support 53 — 55
Disabled
Disabled From version 53 until version 55 (exclusive): this feature is behind the dom.IntersectionObserver.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
IE No support NoOpera Full support YesSafari Full support 12.1WebView Android Full support 51Chrome Android Full support 51Firefox Android ? Opera Android ? Safari iOS Full support 12.2Samsung Internet Android Full support 5.0

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
See implementation notes.
See implementation notes.
User must explicitly enable this feature.
User must explicitly enable this feature.

另请参阅